Desktop app • Local AI captions • MP4 & MKV export • Free

Fast subtitle editing and export for video.

Edit captions locally, generate them with local AI, and manage multiple subtitle languages in one project. Burn captions into video or embed switchable subtitle tracks into MP4 or MKV.

Watch full demo on YouTube →

Current version: v1.0.1 · Stable

Free for macOS, Windows and Linux. Signed installers, no account, no watermark.

Download Flixlar

Built for real subtitle workflows

Subtitle formats

Import and export SRT and WebVTT subtitle files.

Local AI captions

Generate subtitles offline with a local speech-to-text model — no cloud, no upload.

MP4 & MKV export

Burn captions into video, or embed multiple switchable subtitle languages losslessly into MP4 or MKV.

Multi-language tracks

Keep several subtitle languages in one project and export them as switchable tracks.

Simple or Advanced

Start with a clean caption list and AI captions. Switch to Advanced when you need tracks, styles and effects.

Fast editing

Create, edit and navigate captions quickly with a focused workflow.

Live preview

Preview captions directly on video while editing and exporting.

Local first

Your videos stay on your computer. No upload required.

About

Built by Mads Barclay Paaskesen — solo developer focused on fast, practical video tools.

Questions, feedback or feature ideas:

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Read more about Flixlar →

Vision

Flixlar is evolving into a fast local subtitle workflow tool for creators, editors and video production.

Current focus areas include subtitle editing, subtitle formats, MP4 export workflows and practical caption tooling.

Local AI captions are already here. Next up: undo/redo, AI translation of caption tracks, and showing two languages at once — for example lyrics on top and a translation below.

Experimental

Effect Editor (beta 1)

An experimental addition alongside Flixlar's caption and subtitle tools — describe a visual effect in plain language, bring your own AI to generate the code, and preview it live over your video.

Watch on YouTube →

Learn more about Effect Editor →